* {
    padding: 0;
    margin: 0;
}
div {
   /* css3 盒子模型 */
   box-sizing: border-box;
}
img {
    vertical-align: middle;
}
.clearfix:after {
    content: "";
    display: block;
    line-height: 0;
    visibility: hidden;
    height: 0;
    clear: both;
}
ul {
    margin: 0;
    padding: 0;
    list-style: none;
}
a {
    color: #666;
    text-decoration: none;
}
img,
a {
    -webkit-touch-callout: none;
}
input {
    -webkit-appearance: none;
}
* {
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0 auto;
    width: 100%;
    min-width: 320px;
    max-width: 640px;
    background:#fff;
    font-size: 14px;
    font-family: -apple-system, Helvetica, sans-serif;
    line-height: 1.5;
    color: #666;
    /* height: 10000px;; */
    }
/* app 头部区域start */
.app {
    width: 100%;
    height: 45px;
    background-color: #333;
}
.app li {
    height: 45px;
    list-style: none;
    float: left;
    line-height: 45px;
    text-align: center;
    color: #FFF;

}
.app li:nth-child(1) {
    width: 8%;    
}
.app li:nth-child(1) img {
    width: 10px;
}
.app li:nth-child(2) {
    width: 10%; 
}
.app li:nth-child(2) img {
    width: 30px;
    vertical-align: middle;
}
.app li:nth-child(3) {
    width: 57%;
    
}
.app li:nth-child(4) {
    width: 25%;
    background-color: #F63515;
}
/* app 头部区域end */
/* search-warp搜索区域start */
.search-warp {
    /* background-color: black; */
    /* margin: 0 auto; */
    position: fixed;
    /* top: 45px; */
    /* left: 0; */
    width: 100%;
    max-width: 640px;
    min-width: 320px;
    height: 44px;
}
.search-btn {
    position: absolute;
    top: 0;
    left: 0;
    width: 40px;
    height: 44px;
    /* background-color: pink; */
}
.search-btn::after {
    content: "";
    display: block;
    height: 18px;
    width: 20px;
    background: url(../images/s-btn.png) no-repeat;
    margin: 14px 0 0 15px;
    background-size: 20px 18px;
}
.search {
    position: relative;
    height: 30px;
    background-color: #fff;
    /* margin-top: 7px; */
    border-radius: 15px;
    margin: 7px 50px 0 50px;
}
.jd-icon::after {
    position: absolute;
    top: 0;
    left: 28px;
    content: "";
    display: block;
    height: 15px;
    width: 1px;
    background-color: #B9B9B9;

}
.jd-icon {
    position: absolute;
    top: 9px;
    left: 12px;
    width: 20px;
    height: 15px;
    background: url(../images/jd.png) no-repeat;
    background-size: 20px 15px;
}
.sou {
    position: absolute;
    top: 9px;
    left: 50px;
    width: 18px;
    height: 15px;
    background: url(../images/jd-sprites\ -\ 副本.png) no-repeat -82px 0;
    background-size: 200px auto;

}
.search-login {
    position: absolute;
    top: 0;
    right: 0;
    height: 44px;
    width: 40px;
    /* background-color: pink; */
    line-height: 44px;
    color: #fff;
}
/* search-warp搜索区域end */
/* 主体内容区域main-content start */
/* 滑动图 */
.slider img {
    width: 100%;
}
/* 小家电品牌日 */
.brand {
    overflow: hidden;
    width: 100%;
}
.brand a img {
    float: left;
    display: block;
    width: 33.33%;
}
/* nav部分 */
.www {
    width: 100%;
}
.www a {
    float: left;
    display: block;
    width: 20%;
    text-align: center;
    /* line-height: 20%; */
    /* margin: 20px 20px 0 20px */
}
.www a img {
    width: 40px;
    margin: 20px 20px 0 20px;
}
/* 新闻模块 */
.news {
    /* float: left; */
    width: 100%;
    margin-top: 20px;
}
.mews img {
    width: 100%;
}
.news a {
    float: left;
    box-sizing: border-box;
    /* width: 33.3333%; */
}
.news a:nth-child(1) {
    width: 50%;
}
/* .news a img:nth-child(1) {
    
} */
.news a:nth-child(2) {
    width: 25%;
}
.news a:nth-child(3) {
    width: 25%;
}
.news a img {
   display: block;
   width: 100%;
}

/* 主体内容区域main-content end */